1DEV

CRYSTAL STRUCTURE OF SMAD2 MH2 DOMAIN BOUND TO THE SMAD-BINDING DOMAIN OF SARA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.220 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural basis of Smad2 recognition by the Smad anchor for receptor activation.

Wu, G.Chen, Y.G.Ozdamar, B.Gyuricza, C.A.Chong, P.A.Wrana, J.L.Massague, J.Shi, Y.

(2000) Science 287: 92-97

  • DOI: 10.1126/science.287.5450.92
  • Primary Citation of Related Structures:  
    1DEV

  • PubMed Abstract: 
  • The Smad proteins mediate transforming growth factor-beta (TGFbeta) signaling from the transmembrane serine-threonine receptor kinases to the nucleus. The Smad anchor for receptor activation (SARA) recruits Smad2 to the TGFbeta receptors for phosphorylation ...

    The Smad proteins mediate transforming growth factor-beta (TGFbeta) signaling from the transmembrane serine-threonine receptor kinases to the nucleus. The Smad anchor for receptor activation (SARA) recruits Smad2 to the TGFbeta receptors for phosphorylation. The crystal structure of a Smad2 MH2 domain in complex with the Smad-binding domain (SBD) of SARA has been determined at 2.2 angstrom resolution. SARA SBD, in an extended conformation comprising a rigid coil, an alpha helix, and a beta strand, interacts with the beta sheet and the three-helix bundle of Smad2. Recognition between the SARA rigid coil and the Smad2 beta sheet is essential for specificity, whereas interactions between the SARA beta strand and the Smad2 three-helix bundle contribute significantly to binding affinity. Comparison of the structures between Smad2 and a comediator Smad suggests a model for how receptor-regulated Smads are recognized by the type I receptors.


    Organizational Affiliation

    Department of Molecular Biology, Princeton University, Lewis Thomas Laboratory, Princeton, NJ 08544, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MAD (mothers against decapentaplegic, Drosophila) homolog 2A, C196Homo sapiensMutation(s): 0 
Gene Names: SMAD2MADH2MADR2
Find proteins for Q15796 (Homo sapiens)
Explore Q15796 
Go to UniProtKB:  Q15796
NIH Common Fund Data Resources
PHAROS:  Q15796
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Smad anchor for receptor activationB, D41Homo sapiensMutation(s): 0 
Gene Names: ZFYVE9MADHIPSARASMADIP
Find proteins for O95405 (Homo sapiens)
Explore O95405 
Go to UniProtKB:  O95405
NIH Common Fund Data Resources
PHAROS:  O95405
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.220 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 138.5α = 90
b = 138.5β = 90
c = 55.9γ = 120
Software Package:
Software NamePurpose
AMoREphasing
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 1999-11-15 
  • Released Date: 2000-01-21 
  • Deposition Author(s): Shi, Y., Wu, G.

Revision History  (Full details and data files)

  • Version 1.0: 2000-01-21
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-01-31
    Changes: Experimental preparation